<?php

require_once dirname(dirname(__FILE__)) . '/config/config.php';
require_once DOCUMENT_ROOT . DIR_SHARED_CONFIG . 'connection.php';


class dao_document_category {

    //Methods
    public function __construct() {

    }

    public function get_all() {
        $db = new connection();
        $con = $db->open_connect();
        
        $query = "SELECT c2.cat_name AS cat_parent_name, c1.* FROM tbl_document_category c1 LEFT JOIN tbl_document_category c2 ON c1.cat_parent_id = c2.cat_id";
        /** @noinspection PhpParamsInspection */
        $result = mysqli_query($con, $query)
        or die("Query fail: " . mysqli_error());
        
        $list = array();
        while ($row = mysqli_fetch_array($result)) {
            array_push($list, $row);
        }
        $db->close_connect();
        return $list;
    }

    public function save($cat_id, $cat_name, $cat_parent_id) {
        $db = new connection();
        $con = $db->open_connect();

        if (empty($cat_parent_id)) {
            $cat_parent_id = "NULL";
        }
        
        if ($cat_id == 0) {
            $query = "INSERT INTO tbl_document_category(cat_name, cat_parent_id) VALUES (
                '" . $cat_name . "'," . $cat_parent_id . ")";
        } else {
            $query = "UPDATE tbl_document_category SET "
                    . "cat_name = '" . $cat_name . "',"
                    . "cat_parent_id = '" . $cat_parent_id . "'"
                    . "WHERE cat_id = " . $cat_id;
        }
        /** @noinspection PhpParamsInspection */
        $result = mysqli_query($con, $query) or die("Query fail: " . mysqli_error());

        $db->close_connect();
        return TRUE;
    }

    public function get_by_id($id) {
        $db = new connection();
        $con = $db->open_connect();

        $query = "SELECT * FROM tbl_document_category WHERE cat_id = " . $id;
        /** @noinspection PhpParamsInspection */
        $result = mysqli_query($con, $query) or die("Query fail: " . mysqli_error());

        $row = mysqli_fetch_array($result);

        $db->close_connect();
        return $row;
    }

    public function delete($id) {
        $db = new connection();
        $con = $db->open_connect();

        $query = "DELETE FROM tbl_document_category WHERE cat_id = " . $id;
        /** @noinspection PhpParamsInspection */
        mysqli_query($con, $query) or die("Query fail: " . mysqli_error());

        $db->close_connect();
        return TRUE;
    }
    
    public function get_all_children_by_parent_id($parent_id) {
        $db = new connection();
        $con = $db->open_connect();
        
        $query = "SELECT * FROM tbl_document_category where cat_parent_id = ".$parent_id;
        /** @noinspection PhpParamsInspection */
        
        $result = mysqli_query($con, $query)
        or die("Query fail: " . mysqli_error());
        
        $list = array();
        while ($row = mysqli_fetch_array($result)) {
            array_push($list, $row);
        }
        $db->close_connect();
        return $list;
    }
    
    public function get_root_categories() {
        $db = new connection();
        $con = $db->open_connect();
        
        $query = "SELECT * FROM tbl_document_category WHERE cat_parent_id is NULL OR cat_parent_id = 0";
        
        /** @noinspection PhpParamsInspection */
        $result = mysqli_query($con, $query)
        or die("Query fail: " . mysqli_error());
        
        $list = array();
        while ($row = mysqli_fetch_array($result)) {
            array_push($list, $row);
        }
        $db->close_connect();
        return $list;
    }
    
}
